Derive an equation for the entropy change of a system of perfect gas when it expands isothermally
from a volume vito a volume vi.
calculate the change in entropy when 4.00 g of nitrogen is allowed to expand from 500 cm to
750 cm at 300 k.
calculate the entropy change in the surroundings when 1.00 mol n2o(g) is formed from 2.00 mol

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

just did the assignment and the answer was #1 +2 n